Perhaps you should try some spelling variations:
"risk estimation algorithms" » "risk estimation algorithm", "risk optimization algorithms", "risk optimisation algorithm", "pose estimation algorithms"
"_ optimize algorithmss" » "_ optimized algorithms", "_ optimizer algorithms", "_ optimized algorithmss", "_ optimise algorithmss"
"done optimized algorithm" » "done optimized algorithms", "done optimizer algorithms", "dong optimized algorithm", "one optimized algorithm", "don optimized algorithm"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("done optimized algorithm") or ("_ optimize algorithmss"))) or ("risk estimation algorithms"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("done optimized algorithm") OR ("_ optimize algorithmss"))) OR ("risk estimation algorithms")).
• Removing quotes may allow a broader search: (((( done optimized algorithm ) or ( _ optimize algorithmss ))) or ( risk estimation algorithms )).
• Adding a wildcard symbol may retrieve word variants: (((("done optimized algorithm") or ("_ optimize algorithmss"))) or ("risk estimation algorithms"))*.